Bisphosphonate 복용환자에서 임플란트를 식립하는 것이 정당한가?

ope

SNS 활용: 트위터, 수업에 활용하기

첨단의 기술 및 네트워크를 통한 소통이 강조되고 있습니다. 이러한 시기에 폭발적이라 할 만큼 확산되고 있는 것이 바로 SNS(Social Network System)입니다. 위키피디아에는 그 개념을개인이 인맥구축을 목적으로 한 커뮤니티형 웹사이트라고 정의하고 있습니다. 일명TGIF라 불리우는트위터, 구글, 아이폰, 페이스북이 바로 SNS 기반의 미디어들입니다. 언론 뿐 아니라 선거에도 영향력을 미칠 정도로 현재 SNS는 다른 어떤 도구들 보다고 강력한 힘을 보여주고 있습니다. 그 가운데 트위터는 140자 내에 자신의 글을 작성하고 구독자들은 실시간으로 받아보고 반응할 수 있는 작지만 강력한 매체입니다. 가입 및 활용이 편리하여 누구나 쉽게 이용할 수 있는 매체로 소통의 용이성 및 네트워킹의 간편성 등의 이유로 최근에는 대학 수업에서 이 트위터를 활용하는 사례 가 늘고 있습니다. 특히 트위터로 상호작용을 활성화하였을 때 다음과 같은 기능을 수행할 수 있습니다. ·연락처를 따로 알 필요 없이 직접적인 커뮤니케이션이 가능 ·수업을 듣는 누구나 프로젝트에 자유롭게 참여하여 협동이 가능 ·교수자가 수시로 공지사항(기한일, 테스트 내용)이나 새로운 뉴스 등을 학생들에게 알릴 수 있음 ·트위터를 통해 언제 어디서든 손쉽게 떠오르는 아이디어를 공유할 수 있기 때문에 Brainstorming에 유용 ·교수자이든 학생이든 흥미로운 웹사이트나 정보를 post 해서 공유·트위터의 특성상 의견제시하기의 부담이 적기 때문에 설문조사, 질문, 피드백 등 활발히 이루어짐 · 트위터를 이용하면 교실에서보다 다양하고 많은 커뮤니케이션이 가능하고, 이는 배움의 기회가 늘어나는 효과를 수

Radiographic assessment of clinical root-crown ratios of permanent teeth in a healthy Korean population

PURPOSE: The aim of this study was to determine the absolute value of the root/crown ratio (R/C ratio) using panoramic radiographs (PRGs) in a healthy Korean population. MATERIALS AND METHODS: In total, 99 patient radiographs (of 50 males and 49 females subjects; aged 16 to 24 years old) were examined, and 2,770 teeth were analyzed. Crown lengths and root lengths were measured with modified Lind's measurements using PACS tools by two examiners in two separate sessions two months apart. All data were analyzed using SPSS. The independent t-test was used to assess for gender differences, and the paired t-test was used to compare both arches with a significance level of P<.05. RESULTS: The mean R/C ratios varied from 1.29 to 1.89 (male: 1.28-1.84; females: 1.31-1.94). The highest R/C ratios were recorded for the mandibular canines (1.89), followed by the maxillary canines (1.79). The lowest R/C ratios were recorded for the maxillary second molars (1.31). In comparison with the maxillary teeth (1.29-1.78), the mandibular teeth yielded the higher R/C ratio (1.47-1.89), and this difference was significant in the females (P<.05). The difference between the genders was not statistically significant, except for the maxillary central incisors, mandibular canines and mandibular first premolars. CONCLUSION: These data may enhance the understanding of the clinical R/C ratio as a useful guideline for determining the status of teeth and the ethnic difference.ope

A case of secondary amyloidosis due to bronchiectasis

The Amyloidosis represent a heterogeneous group of disorders characterized by abnormal extracellular and endothelial accumulation of insoluble proteins. This disorder displays variable clinical symptoms depending upon the involved organ and a diagnosis is rendered through a biopsy of the affected organ, follwed by staining using Congo-red which reveals an apple-green birefringence. We report a case of secondary amyloidosis diagnosed incidentally by endoscopic gastric and sigmoid colon mucosal biopsy in a patient who had history of bronchiectasis and recurrent pneumonia, pseudomembranous colitis and paralytic ileus.ope

Transient Visual Acuity Decrease after Inferior Alveolar Nerve Block Anesthesia

One of the most common procedures in dentistry is the inferior alveolar nerve block anesthesia but visual problem can occur during this procedure. Transient visual acuity decrease after inferior alveolar nerve block anesthesia can result from unintended intravascular injection. In this case report, we present ocular complication that has rarely been reported. The understanding of anatomy related to this case is discussed with suggestions for proper management of the patients. The dental management for ocular complications includes a correct diagnosis, management by understanding of patient's anatomic variations. This will prevent intravascular injection.ope

Oral Surgery using Low-molecular-weight Heparin in the Anticoagulated Patients

Anticoagulation therapy with warfarin sodium is used to reduce the risk of thromboembolic events in patients with valvular heart disease, prosthetic heart valve, recurrent myocardiac infarction, etc. To keep anticoagulation state and minimize bleeding risk, patients with high risk of thromboembolism have been usually hospitalized for heparinization before oral surgery like extraction. However, this protocol requires time and high expense because of the long period of hospitalization and this is why low-molecular-weight heparin (LMWH) therapy is receiving attention in medical field as well as dentistry. LMWH has several advantages over unfractionated heparin (UFH) including predictable anticoagulant response which makes coagulation monitoring unnecessary in most patients and longer half-life than heparin which enables the patients to give themselves a subcutaneous injection once or twice daily. These advantages of LMWH make patients get oral surgery on an outpatient basis so that they can save time and cost. This case report introduces the use of LMWH in dental surgery and suggests proper use of LMWH. Though LMWH bridging therapy is widely used most of the previous studies are observational studies. Therefore randomized controlled trials are necessary to evaluate the safety and efficacy of LMWH bridging therapy.ope

Changing trends of infective endocarditis according to the change in health care system in Korea

Background: In July 2000, there was a dramatic change in Korean health care system with the medical reform, the separation system of pharmacies and prescriptions. Before then, patients could easily get antibiotics without doctors’ prescriptions. Since the symptoms and signs of infective endocarditis are very nonspecific, prior self treatment with antibiotics before admission was common. This study was performed to determine the changing trends of infective endocarditis according to the change in health care system. Methods: One hundred eighty eight patients from 8 different medical institutions were included. Medical records were reviewed retrospectively for each patient who was diagnosed as infective endocarditis by Modified Duke criteria. Patients were separated into two different groups (Group I : patients diagnosed before July 2000, Group II : patients diagnosed after November 2000). Clinical characteristics, blood culture positivity, and in-hospital mortality were compared. Results: There was no difference in clinical manifestation between two groups other than malaise. Blood culture positivity was 57.4% in group I and 71.1% in group II. Blood culture positivity was significantly higher in group II (p=0.038). In-hospital mortality tends to be lower in group II, which was 22.3% in group I and 12.9% in group II (p=0.066). The relationship between higher blood culture positivity and lower in-hospital mortality couldn’t be clarified. Conclusion: There was an increase in blood culture positivity and a tendency to decrease in in-hospital mortality after July, 2000, possibly due to health care reform. This, to my knowledge, is the first effort to investigate the changing trends of an actual clinical disease according to the change in health care system.ope

황금 배양세포의 elicitation에 의한 triterpenoids의 생산과 elicitation의 작용기전에 대한 연구

학위논문(석사)--서울대학교 대학원 :약학과 생약학전공,1999.Maste

신규 퀴놀론 항균제 DW286의 항균활성 및 DW286에 대한 Staphylococcus aureus의 내성기전 연구

Thesis (doctoral)--서울대학교 대학원 :제약학과,2003.Docto

보고서 베끼지, 그 대안은?

이제 중간고사 기간을 넘어서 한 학기의 후반으로 접어들고 있다. 본격적인 보고서 제출 기간이다. 도서관 열람실은 여느 때보다 서가 밖에 쌓여있는 책들로 어수선해질 것이다. 바빠지는 곳은 도서관뿐만이 아니다. 학생들은 인터넷이라는정보의 바다속에서 입맛에 맞는 보고서를 고르고 모아 조금 다른 내용으로재편집을 한다. 학생들은 보통 보고서의 주제가 제시되면 관련 정보를 얻기 위해 인터넷 검색엔진을 활 용한다. 그리고 너무나도 쉽게 다양한 정보를 손에 넣을 수 있게 된다. 심지어긁어 붙이기만으로도 한편의 보고서를 완성할 수 있다. 이렇게 제출된 학생들의 보고서에서 토씨하나 다르지 않은 문구들을 발견하게 되는 경우도 발생하게 된다